1389286080 has 1120 divisors, whose sum is σ = 6609039360. Its totient is φ = 268738560.

The previous prime is 1389286057. The next prime is 1389286103. The reversal of 1389286080 is 806829831.

1389286080 is a `hidden beast` number, since 1 + 38 + 9 + 2 + 8 + 608 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1389286057) and next prime (1389286103).

It is a tau number, because it is divible by the number of its divisors (1120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 44815665 + ... + 44815695.

It is an arithmetic number, because the mean of its divisors is an integer number (5900928).

Almost surely, 2^1389286080 is an apocalyptic number.

1389286080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389286080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3304519680).

1389286080 is an abundant number, since it is smaller than the sum of its proper divisors (5219753280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389286080 is a wasteful number, since it uses less digits than its factorization.

1389286080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1389286080 is about 37273.1281220130. The cubic root of 1389286080 is about 1115.8279304602.

The spelling of 1389286080 in words is "one billion, three hundred eighty-nine million, two hundred eighty-six thousand, eighty".